Next-generation sequencing analysis of lung and colon carcinomas reveals a variety of genetic alterations

  • Authors:
    • Sandy Chevrier
    • Laurent Arnould
    • François Ghiringhelli
    • Bruno Coudert
    • Pierre Fumoleau
    • Romain Boidot
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  • Published online on: June 27, 2014     https://doi.org/10.3892/ijo.2014.2528
  • Pages: 1167-1174
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Abstract

The development of targeted therapies in cancer has accelerated the development of molecular diagnosis. This new cancer discipline is booming, with an increasing number of gene alterations to analyze in a growing number of patients. To deal with this fast-developing activity, current analysis techniques (Sanger sequencing, allelic discrimination and high resolution melting) take more and more time. In recent years, next generation sequencing (NGS) technologies have appeared and given new perspectives in oncology. In this study, we analyzed FFPE lung and colon carcinomas using the Truseq Cancer Panel, which analyzes the mutation hotspots of 48 genes. We also tested the use of whole-genome amplification before NGS analysis. NGS results were compared with the data obtained from routine diagnosis. All of the alterations routinely observed were identified by NGS. Moreover, NGS revealed mutations in the KRAS and EGFR genes in patients diagnosed as wild-type by routine techniques. NGS also identified concomitant mutations in EGFR and KRAS or BRAF mutations, and a 15-nt deletion in exon 19 of EGFR in colon carcinomas. The study of the other genes sequenced in the Panel revealed 14 genes altered by 27 different mutations and three SNP with a possible role in cancer susceptibility or in the response to treatment. In conclusion, this study showed that NGS analysis could be used for the analysis of gDNA extracted from FFPE tissues. However, given the high sensitivity of this technology, high-throughput clinical trials are needed to confirm its reliability for the molecular diagnosis of cancer.
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September-2014
Volume 45 Issue 3

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Chevrier S, Arnould L, Ghiringhelli F, Coudert B, Fumoleau P and Boidot R: Next-generation sequencing analysis of lung and colon carcinomas reveals a variety of genetic alterations. Int J Oncol 45: 1167-1174, 2014
APA
Chevrier, S., Arnould, L., Ghiringhelli, F., Coudert, B., Fumoleau, P., & Boidot, R. (2014). Next-generation sequencing analysis of lung and colon carcinomas reveals a variety of genetic alterations. International Journal of Oncology, 45, 1167-1174. https://doi.org/10.3892/ijo.2014.2528
MLA
Chevrier, S., Arnould, L., Ghiringhelli, F., Coudert, B., Fumoleau, P., Boidot, R."Next-generation sequencing analysis of lung and colon carcinomas reveals a variety of genetic alterations". International Journal of Oncology 45.3 (2014): 1167-1174.
Chicago
Chevrier, S., Arnould, L., Ghiringhelli, F., Coudert, B., Fumoleau, P., Boidot, R."Next-generation sequencing analysis of lung and colon carcinomas reveals a variety of genetic alterations". International Journal of Oncology 45, no. 3 (2014): 1167-1174. https://doi.org/10.3892/ijo.2014.2528